A CRPF camp is located in the vicinity of Sarkeguda.
The small bridge spanned the Mukarram nullah between Basaguda and Sarkeguda, additional superintendent of police Indira Kalyan Elesela told PTI. The area is about 450 km away from the state capital.
No casualties were reported in the blast, he said, claiming that the incident showed Naxals' frustration with the construction of Bijapur-Jagargunda road despite their attempts to sabotage the work.